An investigation is underway to find out how the disaster happened.

一项调查正在进行，以查明这场灾难是如何发生的。

《柯林斯英汉双解大词典》

An investigation is underway.

事故原因正在调查中。

youdao

Research on this question is underway.

关于该问题的研究正在进行中。

youdao

Interim President Rose Francine Rogombe says an investigation is underway to determine who was responsible for the violence.

VOA: standard.2009.10.04

The Georgian spokesman says he cannot be 100 percent certain about Russia's involvement,but notes that an investigation of specific involvement of Russian special services is underway.

VOA: standard.2009.05.05

But he says, residents must be confident because the reconstruction is underway.

VOA: standard.2010.04.06

While this building spree is underway, natural gas will serve as a vital bridge fuel.

FORBES: IEA Chief Predicts End Of Internal Combustion Engine By 2050

Thain has denied news reports that a bigger investigation into this week's events is underway.

FORBES: A New Worry For Wall Street

It said a nationwide search is underway for a new fire chief and captains.

WSJ: Gov't: 4 NY area airports have training violations